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https://issues.apache.org/jira/browse/HADOOP-10047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810677#comment-13810677
]
Hadoop QA commented on HADOOP-10047:
------------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12611467/HADOOP-10047-trunk.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 2 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
hadoop-common-project/hadoop-common.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HADOOP-Build/3258//testReport/
Console output:
https://builds.apache.org/job/PreCommit-HADOOP-Build/3258//console
This message is automatically generated.
> Add a directbuffer Decompressor API to hadoop
> ---------------------------------------------
>
> Key: HADOOP-10047
> URL: https://issues.apache.org/jira/browse/HADOOP-10047
> Project: Hadoop Common
> Issue Type: New Feature
> Components: io
> Affects Versions: 2.3.0
> Reporter: Gopal V
> Assignee: Gopal V
> Labels: compression
> Fix For: 3.0.0
>
> Attachments: DirectCompressor.html, DirectDecompressor.html,
> HADOOP-10047-WIP.patch, HADOOP-10047-final.patch,
> HADOOP-10047-redo-WIP.patch, HADOOP-10047-trunk.patch,
> HADOOP-10047-with-tests.patch
>
>
> With the Zero-Copy reads in HDFS (HDFS-5260), it becomes important to perform
> all I/O operations without copying data into byte[] buffers or other buffers
> which wrap over them.
> This is a proposal for adding a DirectDecompressor interface to the
> io.compress, to indicate codecs which want to surface the direct buffer layer
> upwards.
> The implementation should work with direct heap/mmap buffers and cannot
> assume .array() availability.
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